Section of onchocercoma due to Onchocerca volvulus. Several female adult worms were surrounded with host fibrotic tissue. Many uterine embryos or microfilariae are seen. In generaly, adult Onchocerca volvulus provoke a fibroblastic reaction in the host which causes the worms to become enveloped in a fibrous scar forming the onchocercal nodule or onchocercoma. x100
Hae-Seon Nam
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